The smart Trick of Crystal That No One is Discussing
The smart Trick of Crystal That No One is Discussing
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诗中“胜美玉”,“过冰清”,写出水晶的质地美,而“亦欲应时明”则描绘出水晶充满灵性的动态美,耐人寻味。罗维是有独特眼光,懂得水晶真谛,第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实;以水晶为直接吟咏对象的诗篇还有:
①压电效�?在机械力(压力或拉�?作用下,水晶单晶体的两端会产生电荷,其电量相等但符号相反。在工业上,无色、无缺陷、不具双晶的水晶常被用来作压电石英片。
发晶的价值取决于发的颜色、罕见性及大小,一般是发色鲜艳、块度大的价格高。水胆水晶的价值主要取决于水胆及晶体的大小、透明度的高低。如果水胆较大并有一定形态,便可加工成较为珍贵的工艺品。另外水胆中的水也有一定的科学研究价值,通过它们可了解几百万年前地球上水的成分及变化。
养殖晶:养殖晶是指,用天然水晶做种子,然后赋予天然水晶生长的高压条件,养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长,这样的水晶成分(分子式)与天然水晶是一摸一样的,唯一有差别的是,这样的水晶磁场作用没有天然水晶强。
25If you are a Billy Crystal lover, you can like this movie.如果你是比利·克里斯特尔的影迷,你就会喜欢这部电影。《柯林斯英汉双解大词典》
当二氧化硅结晶完美时就是水晶;结晶不完美的就是石英:二氧化硅胶化脱水后就是玛瑙;二氧化硅含水的胶体凝固后就成为蛋白石;二氧化硅晶粒小于几微米时,就组成玉髓、燧石、次生石英岩。
30Three times went earlier, and I used to be shocked to discover it once again: the many openings ended up sewed up by skinny and white thread and so they appeared just like the ice crystal on Winter season's branches in the north.
11I thoroughly opened the bundle and found a crystal bell inside.我小心地打开包裹,发现里面有一个水晶钟。
水晶包裹体丰富多彩,从气体、液体到各种矿物质,甚至宝石,均可被包含于水晶内,各种包裹体所形成的景象更是变化万千。按照包裹体的内容,常把包裹体水晶分为一下八类:
晶体 Silicon crystals grown within a laboratory transform gentle into electrical Electricity. 在实验室中长成的硅晶体可将光线转变为电能。
被主体水晶所捕获的包裹体。原生包裹体通常为固相,形态较规则。水晶中典型的原成包裹体有金红石、电气石、黄铁矿等,也会见到岩石碎屑或集合体。
Crystallography would be the research of crystals, and it promotions with everything from excellent geometric styles to seemingly random conglomerations of particles and minerals.
⑦双色水晶:一种紫色和黄色共存一体的水晶,紫色、黄色之间界限较明显,分别占据晶块的一部分。
crystal Alteration is variable: absent in lots of crystals, in others creating dense sericite aggregates which may display some recrystallization results to generate coarser-grained white mica. Through the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. From your Cambridge English Corpus In addition, haloarchaeal cells were being embedded within just salt crystals less than laboratory disorders and subsequently analysed by gentle microscopy. In the Cambridge English Corpus The white click here clouds (commonly sparse) ended up also broadly thought to be becoming composed of tiny crystals of h2o ice, relatively like cirrus in our ambiance. From the Cambridge English Corpus They are really present in evaporite salt lakes and can be trapped in salt crystals for the duration of evaporation. With the Cambridge English Corpus As a result, the cells (organelles and membranes) are ruined mechanically by ice crystals, leading to Demise by way of mobile lysis. With the Cambridge English Corpus The crystals were used in the primary or 2nd orders of reflection. From your Cambridge English Corpus In our 8xperiments, the crystals had been cubes that has a foundation region of eight e mm. From your Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : outcome of temperature and stress.